Answer:
It specifies that the poem will be about a late spring snow.
Step-by-step explanation:
This passage does not mention a full moon, cranes and toy boats floating in a stream, nor does it show the prince's thoughts about certain events.
The passage describes objects in nature but does not indicate the season, but the passage makes it clear that the poem will be on a late spring snow. This is written in the following excerpt: " A poem, perhaps about the bare slopes of Mount Atu, and a lone climber struggling up the mountainside as a late spring snow began to cover his shoulders. "